Mullica Hill: Fossil Hunting in Gloucester County, New Jersey

Updated June 2026

Mullica Hill is a mapped rockhounding spot in Gloucester County, New Jersey. Reported finds include amber, fossil. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Gloucester County
State: New Jersey
Nearest road: Mullica Hill Road
Postcode: 08062
Coordinates: 39.73311, -75.22016

Geology at Mullica Hill

This spot sits on Mt. Laurel Formation, mapped as sand that formed roughly 84 to 72 million years ago. Reworked sediments like these can carry fossils eroded from older beds upstream, typically as rolled bone fragments, teeth, and shell material.

Mapped unit: Mt. Laurel Formation
Age: 84–72 Ma (Late Cretaceous)
Rock types: sand
Elevation: 40 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit Mullica Hill

Best months: March to December. Typical highs run 87°F in midsummer and 42°F in midwinter, with winter lows near 25°F.

Climate normals: NOAA 1991-2020 monthlies, GLASSBORO 2 NE station (7 mi away).

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Mullica Hill

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Mullica Hill.

Across the state line from Mullica Hill

Mullica Hill is close enough to the New Jersey border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Mullica Hill FAQ

Where is Mullica Hill?+

Mullica Hill is in Gloucester County, New Jersey, at 39.73311, -75.22016. Nearest road: Mullica Hill Road.

What rocks and minerals can you find at Mullica Hill?+

Mullica Hill is reported to produce Amber, Fossil.

Is collecting allowed at Mullica Hill?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Mullica Hill?+

A rock hammer, a cold chisel, safety glasses, and newspaper or foam for wrapping finds cover most fossil ground. A trowel and a sieve help in soft exposures.

When is the best time to visit Mullica Hill?+

The most comfortable months at Mullica Hill are March to December.

How do I get to Mullica Hill?+

Open the directions link to navigate to 39.73311, -75.22016 in Google Maps. The nearest road is Mullica Hill Road.

More rockhounding in New Jersey

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Open Mullica Hill on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.